#include <iostream>
#include "stock10.h" 
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

Stock::Stock()
{
	std::cout << "Default constructor called\n";
	company = "no name";
	shares = 0;
	share_val = 0.0;
	total_val = 0.0;
} 

Stock::Stock(const std::string & co, long n, double pr)
{
	std::cout << "Constructor using " << co << "called\n";
	company = co;
	
	if(n < 0){
		std::cout<<"Number of shares can't be nagative;"
				 <<company << " shares set to 0.\n";
		shares = 0;
		//TODO
	}
	else
		shares = n;
	share_val = pr;
	set_tot();
}

Stock::~Stock()
{
	std::cout << "Bye, " << company <<"!\n";
}

void Stock::buy(long num, double price)
{
	if(num < 0){
		std::cout << "Number of shares purchased can't be negative."
			<< "Transaction is aborted.\n";
		//TODO
	}
	else
	{
		shares += num;
		share_val = price;
		set_tot();
	}
}

void Stock::sell(long num, double price)
{
	using std::cout;
	if(num < 0)
	{
		cout << "Number of shares sold can't be negative."
			<< "Transaction is aborted.\n";
	}
	else if(num > shares){
		cout << "you can't sell more than you have!"
		<< "Transaction is aborted.\n";
		//TODO
	}
	else 
	{
		shares -= num;
		share_val = price;
		set_tot();
	}
} 

void Stock::update(double price)
{
	share_val = price;
	set_tot();
}

void Stock::show()
{
	using std::cout;
	using std::ios_base;
	ios_base::fmtflags orig =
		cout.setf(ios_base::fixed, ios_base::floatfield);
	std::streamsize prec = cout.precision(3);
	
	cout << "Company:" << company
		<< "Shares:" << shares << '\n';
	cout <<"  Shares Price: $ " << share_val;
	cout.precision(2);
	cout << " Total Worth: $ " << total_val << '\n'; 
	cout.setf(orig, ios_base::floatfield);
	cout.precision(prec);
}
